Description: apparmor: Fix use-after-free in aa_audit_rule_init
References:
 https://lore.kernel.org/patchwork/patch/1142523/
Notes:
 bwh> Introduced in 4.18 by commit 52e8c38001d8 "apparmor: Fix memory leak of
 bwh> rule on error exit path".
Bugs:
upstream: needed
4.19-upstream-stable: needed
4.9-upstream-stable: N/A "Vulnerability introduced later"
3.16-upstream-stable: N/A "Vulnerability introduced later"
sid: needed
4.19-buster-security: needed
4.9-stretch-security: N/A "Vulnerability introduced later"
3.16-jessie-security: N/A "Vulnerability introduced later"